Hacker News: hoerensagen

New comment by hoerensagen in "Light without electricity? Glowing algae could make it possible"

hoerensagen — Sat, 09 May 2026 09:31:30 +0000

It is also relevant to something from the last three books, which haven't made it onto TV yet.

WeatherGenerator project aims to recast ML for Earth system modelling

hoerensagen — Mon, 19 Jan 2026 17:57:29 +0000

Article URL: https://www.ecmwf.int/en/about/media-centre/news/2024/weathergenerator-project-aims-recast-machine-learning-earth-system

Comments URL: https://news.ycombinator.com/item?id=46682268

Points: 2

# Comments: 0

Three-Dimensional Mapping of the Moai (Statue) Quarry at Rano Raraku, Rapa Nui

hoerensagen — Thu, 08 Jan 2026 17:32:09 +0000

Article URL: https://www.arcgis.com/apps/instant/3dviewer/index.html?appid=233cada52d434e9fa4d1741c92e308da

Comments URL: https://news.ycombinator.com/item?id=46543815

Points: 1

# Comments: 0

Galileo Bad, Archimedes Good

hoerensagen — Sun, 28 Sep 2025 10:21:22 +0000

Article URL: https://intellectualmathematics.com/blog/galileo-bad-archimedes-good/

Comments URL: https://news.ycombinator.com/item?id=45403225

Points: 24

# Comments: 14

New comment by hoerensagen in "A CT scanner reveals surprises inside the 386 processor's ceramic package"

hoerensagen — Sun, 10 Aug 2025 10:38:39 +0000

The PC would still heat up when started. You would need very precise temperature control to avoid that. That could be quite difficult to do

But how do AI images/videos work? – Guest video by ‪ WelchLabsVideo [video] ‬

hoerensagen — Sun, 27 Jul 2025 14:58:17 +0000

Article URL: https://www.youtube.com/watch?v=iv-5mZ_9CPY

Comments URL: https://news.ycombinator.com/item?id=44701794

Points: 4

# Comments: 0

New comment by hoerensagen in "Solar power has begun to transform the world’s energy system"

hoerensagen — Thu, 10 Jul 2025 17:40:41 +0000

Maybe I'm misunderstanding but the Author seems to think that the main conversion losses in electricity generation come from renewables

Edit:

I think this paragraph should be enough to show that it is not advisable to trust the author on anything to do with energy:

>Due to the weight of all this stuff, and the relatively mild heat and scattered light coming from the Sun, solar panels produce no more than 20 Watts for each kg of their mass, even on a sunny day. Meanwhile wind turbines, with their massive concrete bases and tall steel towers, generate a mere 6 Watts for every kg of their weight. (Batteries fare slightly better at 240 W/kg.) For comparison diesel fuel produces 13,000 Watts for every kg of fuel burned. A regular diesel engine weighing 150 kg can thus easily produce 110 kW of power, while the same feat would require 5.5 tons of solar panels directly lit by the Sun at noon.

New comment by hoerensagen in "Solar power has begun to transform the world’s energy system"

hoerensagen — Thu, 10 Jul 2025 17:17:48 +0000

China ist still adding coal plants but their capacity factor is falling.

In fact Chinas emissions have probably already peaked.

https://www.economist.com/china/2025/05/29/chinas-carbon-emi...

https://www.carbonbrief.org/analysis-clean-energy-just-put-c...

https://www.sustainabilitybynumbers.com/p/china-coal-plants

New comment by hoerensagen in "Laser mapping reveals oldest Amazonian cities, built 2500 years ago (2024)"

hoerensagen — Fri, 03 Jan 2025 20:02:48 +0000

I think this video is good Ressource on the topic.

https://m.youtube.com/watch?v=-iCIZQX9i1A

Basically Hancock show lots of interesting and fascinating archaeological sites which is great especially since a lot of these are things that most viewers didn't know about before. But sadly he chooses to use these site only to present his theory for which he's doesn't have any actual evidence.

New comment by hoerensagen in "Why Is Light So Fast?"

hoerensagen — Fri, 04 Oct 2024 20:14:23 +0000

I think you might have the same misconception about the planck length that I had:

"The Planck length does not have any precise physical significance, and it is a common misconception that it is the inherent “pixel size” or smallest possible length of the universe.[1] If a length smaller than this is used in any measurement, then it has a chance of being wrong due to quantum uncertainty.[2]"

https://simple.m.wikipedia.org/wiki/Planck_length#:~:text=Th....

New comment by hoerensagen in "They don't make 'em like that any more: the 3.5mm headphone jack socket"

hoerensagen — Tue, 03 Sep 2024 13:15:55 +0000

Is use it for headphones. Perfect for watching movies on train journeys.

New comment by hoerensagen in "They don't make 'em like that any more: the 3.5mm headphone jack socket"

hoerensagen — Mon, 02 Sep 2024 21:42:29 +0000

Splitting audio via Bluetooth works completely fine for me. Doesn't need any extra apps or devices. But I was also very surprised when found out that this works now.

Batteries: How cheap can they get?

hoerensagen — Thu, 04 Jul 2024 19:20:25 +0000

Article URL: https://aukehoekstra.substack.com/p/batteries-how-cheap-can-they-get

Comments URL: https://news.ycombinator.com/item?id=40877337

Points: 297

# Comments: 303

New comment by hoerensagen in "Thousands of Pablo Picasso’s works in a new online archive"

hoerensagen — Sun, 30 Jun 2024 15:46:47 +0000

Why can't any serious museum create a good, simple image gallery?

I like this one: https://www.vangoghmuseum.nl/en/collection?q=&Artist=Vincent...

New comment by hoerensagen in "visionOS thermally throttles based on how much it hears the fans in the mics"

hoerensagen — Sun, 23 Jun 2024 08:29:28 +0000

That is definitely done for bearing in ratting machinery. You can often even pinpoint which bearing is damaged and which part of that bearing is damaged, based on the frequency spectrum.

New comment by hoerensagen in "52-Hertz Whale"

hoerensagen — Tue, 18 Jun 2024 09:54:18 +0000

Not to be confused with whale flu

https://pubmed.ncbi.nlm.nih.gov/32170708/

New comment by hoerensagen in "Germany gets informal EU go-ahead to support gas-fired power, sources say"

hoerensagen — Wed, 12 Jun 2024 09:38:52 +0000

"You don't need to stabilize a grid that has sufficient CO₂ free base capacity."

Yes you do. Even if all your generation is dispatch able, demand will still vary a lot.

New comment by hoerensagen in "More nuclear energy means less mining"

hoerensagen — Sun, 26 May 2024 21:20:41 +0000

Exxon did this with a carbon tax in the US. Here is a quote of an exxon lobbyist bragging about it:

"Nobody is going to propose a tax on all Americans and the cynical side of me says, yeah, we kind of know that but it gives us a talking point that we can say, well what is ExxonMobil for? Well, we’re for a carbon tax,"

Source: https://unearthed.greenpeace.org/2021/06/30/exxon-climate-ch...

New comment by hoerensagen in "Lithium-free sodium batteries exit the lab and enter US production"

hoerensagen — Fri, 03 May 2024 21:37:39 +0000

Between 1 and 2 MWh per year isnt that unusual.

For example in Germany the average per person per year is 1.3MWh.

New comment by hoerensagen in "Asteroid that broke up over Berlin was fastest-spinning one ever seen"

hoerensagen — Thu, 02 May 2024 21:45:22 +0000

Thase are great. here is a brilliant technology connections video about it.

https://youtu.be/t-JN2U4jHgk?feature=shared